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ナトリウム冷却高速炉の炉心損傷事故時の制御棒材の共晶溶融挙動に関する研究,4; 5mass%B$$_{4}$$C-SS共晶溶融物の放射率、熱容量、熱伝導率測定

Study on eutectic melting behavior of control rod materials in core disruptive accidents of sodium-cooled fast reactors, 4; Emissivity, heat capacity and thermal conductivity of 5mass%B$$_{4}$$C-SS eutectic molten material

東 英生*; 福山 博之*; 山野 秀将  

Higashi, Hideo*; Fukuyama, Hiroyuki*; Yamano, Hidemasa

ナトリウム冷却高速炉の炉心損傷事故における制御棒材(炭化ホウ素: B$$_{4}$$)と原子炉構造材(ステンレス鋼: SS)の共晶反応挙動を模擬するのに必要な熱物性モデル構築のため、超高温熱物性計測システム(PROSPECT)を用いたレーザーイメージング密度測定法および液滴振動法により、5mass%B$$_{4}$$C-SS系融体の密度および表面張力の測定を行った結果について報告する。

To develop thermophysical property model to simulate eutectic reaction behavior of B$$_{4}$$C as control rod material and stainless steel (SS) in core disruptive accident of sodium-cooled fast reactor, this paper reports measurement results of density and surface tension of 5mass%B$$_{4}$$C-SS melt by droplet oscillation method and laser imaging density measurement method with very high temperature physical property measurement system (PROSPECT).

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